Flashing for roof construction



Sept. 25, 1928. 1,685,525

F. 'DOW FLASHING FOR ROOF CONSTRUCTION Filed Aug. 17, 1925 PatentedSept. 25, 1928.

UNITED STATES FLOYD Dow. or WYANET, ILLINOIS.

FLASHING FOR ROOF CONSTRUCTION.

Application filed Angust'-17, 1925. Serial No. 50,616.

This invention relates particularly to root construction at a pointwhere a root joins a vertical wall extending above the root, as, forexample, where the root of a kitchen oins a main wall of a house.

The primary object is to provide an improved flashing for use insuch alocation,

1 which will enable a water-tight j ointure to be e'l'lected between theroof and the vertical wall which rises above the roof, the mproveddevice providing for the construction being made with great facility.

The invention is illustrated in its preterred embodiment in theaccompanying drawing, in which Fig. 1 represents abrolien vert' lsectional view of a structure embodying the en ti on. where the joint iseither between a natroot joining a main wall. or between a sloping roo tof a gable-end additionjoinin g themain wall and Fig. 2 represents asimilar section where the joint is between a simple flat sloping roofwhich extends downwardly and away from the main wall.

Y Referring to Fig. 1, A designates a main vertical wall of a house, forexample B designates a roof joined to the main wall some distance belowthe upper end thereof; and C designates the improved flashing employed 7at the jointure.

The flashing C is formed from a. strip of sheet-metal, such as copper,or galvanized sheet-metal, the strip being of any desired length andadapted to extend along the joint as between the root and the verticalwall. There the roof B is in the nature of a flat deck, or where itconstitutes one side of a gable roof, the portion of the flashing whichextends under the roof-covering may be substantially at right angles tothe portion which serves as a channel for the siding, or externalsheeting of the vertical wall A. On the other hand,

where the root slopes downwardly and away from the main vertical wall,the portion of the flashing which extends under the root-covering may beinclined, as shown in Fig. 2.

The flashing preferably is formed integrally from a strip of sheet-metalof suitable length. The metal is folded upon itself along a medial lineto provide the intermediate twoply flange 1; one wing of the metal isbent at substantially right angles to the flange 1. thus providing thebottom web 2 of a channel,- the wing is then bent upwardly to providethe inner wall 3 of said channel. The other wing of the metal preferablyis so formed as to proide an inclined portion 4: which constitutes withthe flange l a small gutter. The metal bent again at the point l toprovide an apex and an inclined wall 1 whose margin 4." serves as anailing strip. Between the flange 1 and Y the strip 3 is altordedachannel for the finishany suitable manner. This covering extends .overthe skirt-portion of the flashing which is secured to the root B. Theformation of the skirt-portion is such as to provide a gutterchannel 9below the edge of the root-covering which abuts against the flange 1 andalso. to provide the apex 1 which serves as a bearing'tor theroot-covering which will'prevent water from passing't-he skirtof theflashing.

and thus seeping beneath the roof-covering. Any water which may get inbetween the edge of the roof-covering 8 and the flange 1 may pass outthrough the gutter-channel 9. In practice, if desired, the upper portionof the flange 1 may be bent back over the upper edge of theroof-covering 8, as indicated by the dotted line 1. This will afford abinding-strip which may be battered against the upper niargin of theshingles by means of a Wooden mallet, and thus greater security againstthe passage otwater between the root-covering and the flashing will beafforded. It will be understood that where the roof-section Bconstitutes one side of a gable roof, the flashing C will be inclined tocorrespond with the inclination of the root. In such case, the ends ofthe siding boards 5 Will be suitably mitered to fit in the channelbetween the flange 1' and the flange 3.

In the modification shown in Fig. 2, A designates the main wall; B.designates a roof sloping downwardly and away from the main wall; and Cdesignates the flashing. The flashing is of the same construction as theflashing C, and corresponding reference characters are employed todesignate the parts. In this case, the skirt which rests upon the roof Band which comprises the gutter, the apex, and the nailing-strip, has ageneral downward inclination to correspond with the slope of the roof.In practice, it is quite possible to manufacture the strip in the formoverlying the upper edge of the roof-covering 8,- as indicated by dottedlines.

By means of the improved flashing, it is possible to provide Weather-tiht connections between a vertical wall and the root of a leanto, oraddition, to the main building. More over, where the root or" theaddition is a gableroof, it is unneees ssary to miter the ends of: thesiding boards 5 Wi'tht e same care as would otherwise be nec-esss U Itrain enters the channel in which thesiding boards are entered, it willgravitate away'or,.in any event, cannot cause leakage. In practice, asphaltum, or lead paints, n ay be employed at the joints to furtherprevent the entrance of water into the channels of the flashing.

. The foregoing detailed description has been given for clearness oi?unde i-n-'tling only, and no unnecessary limitations need be understoodtherefrom, but the appended claims should be construed as broadly aspermissible in view of the prior art.

' What I regard as new, and desire'to secure by Letters Patient, is:

1, A flashing torthe pirrP Se set forth, comprising' a strip of slieetmetal bent upons .to. afford an intermediate flange, one wing of themetal, being then bent to forniaweb and then bent upwardly to formnailing-strip, thus atiordinga ehannelfor the siding between said flangeand nailing-strip, and the other wing: being; bent to provide a skirtadapted to rest upon and having its marginal portion secured to theroof, the intermediate ortlon of said skirt bein rovided with an P anupon itselfto provide 'an'intermediateflange, one wing of said metalbeing bent to term a channel and a nailing-strip; projecting above saidflange, the other wing of said metal serving as a nailing-strip restingupon the roof and having an apex spaced with relation to said. fiangaanda roof-covering"extending ,over said shirt, the upper portionof saidflange being bent over the adjacent portion of theroof-covering andserving as a bind ng. strip. 7

more new. '7

